fuel additives January 04, 2009, 02:01:51 PM Anyone know if certain fuel additives really make the o2 sensors inoperable? Quote Selected
fuel additives Reply #1 – January 04, 2009, 02:51:41 PM Im not sure. I dont run them I just run 93 octane. Quote Selected
fuel additives Reply #2 – January 04, 2009, 02:58:21 PM i dont run them either...you just never know when you buy a car if the previous owner(s) have and if that o2 myth proves true Quote Selected
fuel additives Reply #3 – January 04, 2009, 05:51:25 PM True, but when ever I've looked at them I have never seen one that said it was'nt safe for O2 sensors. Quote Selected
fuel additives Reply #4 – January 04, 2009, 09:35:37 PM Some of those octane boosters have a fair amount of toluene in them. BAD stuff. Don't breathe it or get it on ya.Toluene can be used as an octane booster in gasoline fuels used in internal combustion engines. Toluene at 86% by volume fueled all the turbo Formula 1 teams in the 1980s, first pioneered by the Honda team. The remaining 14% was a "filler" of n-heptane, to reduce the octane to meet Formula 1 fuel restrictions. Toluene at 100% can be used as a fuel for both two-stroke and four-stroke engines; however, due to the density of the fuel and other factors, the fuel does not vaporize easily unless preheated to 70 degrees celsius (Honda accomplished this in their Formula 1 cars by routing the fuel lines through the ler system to heat the fuel). Toluene also poses similar problems as alcohol fuels, as it eats through standard rubber fuel lines and has no lubricating properties as standard gasoline does, which can break down fuel pumps and cause upper cylinder bore wear. Quote Selected
fuel additives Reply #5 – January 05, 2009, 01:33:42 PM Quote from: 20thanniver-ls;250168Anyone know if certain fuel additives really make the o2 sensors inoperable?I don't know about fuel additives, but anti-freeze sure doesn't do them any good. Keep that in mind the next time you lose a head gasket. And you WILL lose a HG if you drive any 3.8 Ford or a 2.3T with a little too much boost.... Quote Selected
fuel additives Reply #6 – January 05, 2009, 02:10:23 PM Any fuel additives with silicone in them will destroy O2 sensors, while additives with lead will kill converters. There's an additive in Canadian gas that's been outlawed in US gas (MTBE, I think) that supposedly harms emissions systems, so much so that until recently Canadian vehicles had detuned (or labotomized) OBD-II systems to prevent false check engine lights, and virtually every auto manufacturer has been lobbying the Canadian government to have the additive outlawed... Quote Selected
fuel additives Reply #7 – January 05, 2009, 03:45:04 PM only time i run an additive in any of my cars i use the injector cleaner or sea foam. Quote Selected
fuel additives Reply #8 – January 05, 2009, 07:04:12 PM MTBE had been used in gas in the US at least as far back as the 1980. It was used in high altitudes (especially in winter) to increase the oxygen content in gas. It works well enough that fuel containing it was banned from use by drivers in their cars at the Porsche Club National event in Colorado Springs. (yeah, I was there racing). MTBE is very carcinogenic and once it's in the ground water, that's pretty much it for that source.Methyl tert-butyl ether, also known as methyl tertiary butyl ether and MTBE, is a chemical compound with molecular formula C5H12O. MTBE is a volatile, flammable and colorless liquid that is immiscible with, yet reasonably soluble, in water. MTBE has a minty odour vaguely reminiscent of diethyl ether, leading to unpleasant taste and odour in water. MTBE is a gasoline additive, used as an oxygenate and to raise the octane number, although its use has declined in the United States in response to environmental and health concerns. It has been found to easily pollute large quantities of groundwater when gasoline with MTBE is spilled or leaked at gas stations. MTBE is also used in organic chemistry as a relatively inexpensive solvent with properties comparable to diethyl ether but with a higher boiling point and lower solubility in water. It is also used medically to dissolve gallstones. Quote Selected
fuel additives Reply #9 – January 07, 2009, 01:40:01 AM I use seafoam in lots of vehicles...no real issues. Ive also used Lucas injector cleaner...it works too.If 110 leaded hasnt killed my O2 sensor yet....i dont think some injector cleaner would do it. I run a 2-1 ratio of 93 octane unleaded to 110 octane leaded every track day.....same O2 sensor for the last 4 years.Off topic, but auto RX is some pretty good motor flush. Im not brave enough to try it on a turbo engine though. Quote Selected
fuel additives Reply #10 – January 18, 2009, 07:37:49 PM Ive used Amsoil Pi on all my motors. Quote Selected
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